It's very cool, and I will be able to know DirectX 9 and apply it to the Aurora project (as another version which will become public as soon as DirectX 9 is released).
Originally Written by some guy at Microsoft
Dear Oscar Rodriguez,
You have been invited to participate in the Microsoft DirectX 9 beta program. In order to be considered as a candidate for inclusion in this Microsoft beta program, you as an individual, or an authorized signatory at your company, must sign and return the Microsoft Master License Agreement for Beta Software (MLAB).
blah blah blah, more technical stuff goes here